Cellular respiration introduction for 9th grade biology

An introduction and overview of cellular respiration

1. Cellular
Respiration
Introduction and Overview
She’s
getting
energy
from her
food!

2. As always…
Key concepts are underlined
Vocabulary terms are in green

3. On your whiteboards
What are
some things
you feel
when you
have not
eaten in a
long time?

4. Energy for CellsEnergy for Cells
We get energy We get energy
from our foodfrom our food
One gram of One gram of
glucose releases glucose releases
3811 calories of 3811 calories of
energyenergy

5. Draw
this

6. To make ATP we need 2*
things
1.Glucose – from food
2.Oxygen*
1.Organisms can make a little ATP without O
2
https://www.youtube.com/watch?v=x8oLu7znwQ0

7. ●Cellular Respiration = process that
cells use to release the energy from
glucose and store it in molecules of
ATP

8. On your whiteboards
What is the chemical symbol for:
Oxygen
Water
Carbon dioxide
Glucose

9. Respiration Equation:
What are the reactants in this equation?
What are the products in this equation?
We need lots
of ATP to
run this fast!

10. Taller partner: How are
the equations for
photosynthesis and
cellular respiration
related to each other?
Shorter partner:
How are they similar?
How are they different?

13. Autotroph or Heterotroph?

14. C
6
H
12
O
6
ATP
Light energy
Chemical (food)
energy
Chemical
energy

15. Breaking chemical bonds in sugar Breaking chemical bonds in sugar
releases energyreleases energy
That energy isThat energy is stored instored in molecules of molecules of
ATPATP

16. On your whiteboards
What is RELEASED
when chemical bonds are
broken?
So…what is STORED in
chemical bonds?

17. There are 3 stages to aerobic
cellular respiration

18. How Cells Make ATP
Glucose
Glycolysis
O
2
Present O
2
Absent
Broken glucose goes to mitochondria
Mitochondria makes lots of ATP
Fermentation
Alcohol Lactic
Acid

19. How do cells get the energy out
of glucose? – Stage 1 GlycolysisGlycolysis
Cells take in glucose
and break it in half -
this is glycolysis
2 ATP are made
energy!

20. If no OIf no O
22  anaerobic respirationanaerobic respiration
2 ATP only
also called fermentation

21. 2 Types of Fermentation
Alcohol Alcohol
FermentationFermentation
Yeast and
bacteria

22. Lactic Acid FermentationLactic Acid Fermentation
muscle cells, yeast, bacteria

23. 11-2-16 Warm up
Do all living things require oxygen to
make ATP? Explain.

24. If O
2
is available  aerobic respiration!aerobic respiration!
Sugar molecules
sent to
mitochondria 
36 ATP made
36 ATP!

25. 2 ATP
36 ATP!

26. Stage 2 Citric Acid Citric Acid
Cycle Cycle (aka Kreb's
cycle)
happens in the
matrix
Reactant: ½
sugar
Products: 2
ATP, CO
2,
electron carrier
NADH

27. Mitochondria
Electron Electron
Transport Transport
Chain Chain
happens on
the cristae
Reactants: O
2
,
NADH
Products:
H
2
O, 34-36
ATP

28. The electron transport chain
O
2
e
-
H
+
H
+

29. http://abcnews.go.com/Archives/video/oct-1982-tylenol-poisoning-9727309

30. Comparing Photosynthesis and Comparing Photosynthesis and
Cellular RespirationCellular Respiration
Photosynthesis vs. Cellular RespirationPhotosynthesis vs. Cellular Respiration
PhotosynthesisPhotosynthesis Cellular RespirationCellular Respiration
FunctionFunctionEnergy storage by Energy storage by
making glucosemaking glucose
Energy release by Energy release by
breaking down breaking down
glucoseglucose
LocationLocationChloroplastsChloroplasts MitochondriaMitochondria
ReactantsReactantsCOCO
22 and H and H
22OO CC
66HH
1212OO
66 and O and O
22
ProductsProductsCC
66HH
1212OO
66 and O and O
22 COCO
22 and H and H
22OO
EquationEquation
COCO
22 + H + H
220 C0 C
66HH
1212OO
66 + O + O
22
OO
22 + C + C
66HH
1212OO
66 CO CO
22 + H + H
22OO

31. So can you…
1.Write the equation for
respiration in symbols and
words?
2.Name the 3 stages of aerobic
cellular respiration and the
reactants and products for
each stage?